What are you guys drilling em for?
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I just like to drill things.
They still pass an OBD-II exhaust emissions inspection with deleet tune?
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So for AZ, your state maybe different, the OBD scan is just for CEL's, automatic pass/fail. Then it's a visual, and then the rolling load test for smoke. These trucks with a full straight pipe on the lowest tune, still won't smoke for that test.
Now your state may be different but to my knowledge there's nothing the DMV has, that will scan for tunes. I would think that would require platform specific scanning software. Could be wrong!